Separated type air conditioner with evaporative condensing apparatus

Abstract

A separated type air conditioner with evaporative condensing apparatus comprises an outdoor unit and at least one indoor unit which the outdoor unit includes an evaporative condensing apparatus, a water chiller type evaporating apparatus and a comparative low pressure compressor for circulating a cooling medium system between the condensing apparatus and the evaporating apparatus within the outdoor unit to avoid long distance medium transmitting for improving the energy saving and environment protecting, and characteristically that the evaporative condensing apparatus comprises an evaporative water intermittent supply system to supply water onto a layer of absorptive material covered on the condensing coils intermittly through an electromagnetic valve automatically controlled by a PC board to assume that the amount of water once supplied to the absorptive material will be approximately fully evaporated within a controlled intermittence to provide a highest effect for absorbing evaporative latent heat form the gas state medium in the condensing coils so as to obtain an extreme low temperature that the medium can be condensed by a low relative critical pressure in using a comparative low power medium compressor for saving a large amount of energy therefore, while each indoor unit is respectively formed of a chilled water/air heat exchanger for cooling the air currents to an ideal condition by the chilled water delivered from the outdoor unit through a water circulating piping system.

What is claimed is:  
     
       1. A separated type air conditioner with evaporative condensing apparatus comprises: 
       an outdoor unit, at least one indoor unit, and a chilled water circulation piping system connected between said outdoor unit and each of said indoor unit for cooling capability transmission;  
       which said outdoor unit comprises:  
       an evaporative condensing apparatus including a plurality of medium condensing coils formed a plurality of air gaps thereat, a layer of absorptive material covered over all heat conductive surfaces of said condensing coil thereon, an evaporative water supply system having a plurality of water distributors and an electromagnetic valve for intermittently spraying water to said absorptive material hereon, a fan system to draw currents of air passing through said air gaps between said condensing coils for speeding the rate of evaporating of absorbed water in said absorptive material and carrying the evaporated moisture and heat away from said evaporative condensing apparatus, a PC board automatically controlling an open/close operation of said electromagnetic valve therefore; an evaporating apparatus formed of a medium/water heat exchanger type water chiller in which a water flow is chilled due to cooling medium evaporating and be transmitted to each of said indoor unit for using as a cooling source therefore; and a cooling medium circulating system including a medium compressor for compressing gas state cooling medium into said evaporative condensing apparatus to condense cooling medium into liquid state, a liquid medium piping for guiding condensed medium from said evaporative condensing apparatus to said evaporating apparatus, an expansion valve disposed at a medium inlet of said evaporating apparatus for evaporating liquid state cooling medium into gas state in said evaporating apparatus to produce chilled water thereat, a gas medium piping for guiding evaporated medium back to said compressor from said evaporating apparatus so as to complete a medium circulating system therefore;  
       while each of said indoor unit is formed of a water/air heat exchanger to cool air currents by chilled water delivered from said water chiller type evaporating apparatus of said outdoor unit, in which the room temperature will be dropped by cooled air currents therefore;  
       and said chilled water circulating system circulated between said water chiller type evaporating apparatus of said outdoor unit and said heat exchanger type indoor unit compressing a water pump disposed in said outdoor unit, a chilled water delivering piping with pipe fittings for delivering chilled water to each of said indoor unit from said water chiller of said outdoor unit, and a water feedback piping with pipe fittings for guiding heated water back to said water pump after heat exchanging in said indoor unit so as to complete a water circulating system therefore.  
     
     
       2. The separated type air conditioner of  claim 1  wherein said water chiller type evaporating apparatus is a sandwich plate type heat exchanger comprising a plurality of heat conductive metal plates formed a plurality of thin medium compartments and a plurality of thin water compartments arranged alternately one to another and fixed by a front wall and a rear wall, a medium inlet, a medium outlet, a water inlet and a water outlet with pipe fittings disposed at said front wall to connect respectively with said medium piping system and said water piping system for chilling a flow of circulated water by the evaporating of cooling medium therefore. 
     
     
       3. The separated type air conditioner of  claim 1  wherein said water chiller type evaporating apparatus is a sleeve tubular coil type heat exchanger comprising a core coil tube inserted in a larger sleeve coil formed a tubular hollow space for guiding liquid state medium to evaporate thereat, a flow of circulating water been guided into said core coil tube in a direction reversed to the direction of medium for gradually chilling circulating water therefore. 
     
     
       4. The separated type air conditioner of  claim 1  wherein each of said indoor unit is formed of a water/air heat exchanger comprising a plurality of chilled water coils and a plurality of cooling fins to provide a plurality of air gaps between said water coils and said cooling fins, a fan system for drawing air currents passing through said air gaps and to be cooled therein, a remote control switch for selecting a predetermined speed stage (RPM) of said fan system to obtain a ideal comfortable room temperature of air condition therefore. 
     
     
       5. The separated type air conditioner of  claim 1  wherein said absorptive material covered on said condensing coils of said evaporative condensing apparatus is made of loose and soft fibers such as non-woven cloth, natural fiber cloth, synthetic fiber cloth etc. 
     
     
       6. The separated type air conditioner of  claim 2  wherein said absorptive material is formed of a tubular hose slipped onto said condensing coils of evaporative condensing apparatus. 
     
     
       7. The separated type air conditioner of  claim 2  wherein said absorptive material is formed of a tap spirally wound onto said condensing coil of said evaporative condensing apparatus. 
     
     
       8. The separated type air conditioner of  claim 1  wherein said evaporative water supply system has a stand by water source been used when a normal water source of city water system is accidentally out of supplying, including a water tank for collecting condensed water produced on a surface of said water chiller type evaporating apparatus and also collecting condensed water from said water/air heat exchanger type indoor unit by a collected water delivering pipe from said indoor unit to said water tank of said outdoor unit, a water pump for pumping water to said evaporative water distributor through said electromagnetic valve. 
     
     
       9. The separated type air conditioner of  claim 1  wherein said PC board comprises a piano switch for setting a period of time for water supplying from 1 second to 15 seconds, a select switch having an “auto” position for normal operation and a “cont.”(continuous) position only used to clean said condensing unit for maintenance, a thermal sensor for detecting the temperature of cooling medium in said condensing coils, and a CPU unit for processing to select a predetermined regular intermittence or a reduced substitutional intermittence of said intermittent water supply system by control said electromagnetic valve automatically according to a temperature signal fed back from said thermal sensor in compare with a setting temperature.